Dennis O’Neill was born in Wales of Irish and Welsh parents. He is one of the world’s leading tenors and a specialist in the works of Verdi. He enjoys a close relationship with Welsh National Opera and has had a long association with The Royal Opera, Covent Garden. He appears regularly at New York’s Metropolitan Opera. Other North American engagements have included Chicago Lyric Opera, San Francisco, San Diego,Vancouver Opera and concerts with the Philadelphia, Cleveland, Montreal, and Ottawa Symphonies, and for the Cincinnati Festival. He has appeared in São Paolo and Santiago.

In Europe, Dennis O’Neill is a frequent guest at the Bavarian State Opera, Munich and he has visited the opera houses of Milan, Vienna, Berlin, Bonn, Cologne, Hamburg, Nice, Zurich, Paris, Oslo, Brussels, Barcelona, Oviedo, and Turin as well as the Arena di Verona.

Dennis O’Neill is also a very busy concert artist and is well known for his performances of Verdi’s Requiem which he has televised no less than seven times, and has sung throughout Europe with conductors including Muti, Sir Colin Davis, Sinopoli, Sir Simon Rattle and Sir John Pritchard. Notable concert performances have included Idomeneo with Sir Charles Mackerras at the BBC Proms, Oberto at the Edinburgh Festival, Aida in Tel Aviv with Mehta, La Damnation de Faust in Paris with Dutoit, Tosca in Cleveland with Slatkin and The Dream of Gerontius in London with Svetlanov. He has given recitals at Covent Garden and La Monnaie in Brussels.